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Finding the Fourth Proportional to 487,155.52, 672,274.38 and 285,951.52

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Solution

The fourth proportional to 487,155.52, 672,274.38 and 285,951.52 is: 394,612.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,155.52 : 672,274.38 = 285,951.52 : x
  2. Step 2: Convert to fraction form
    487,155.52/672,274.38 = 285,951.52/x
  3. Step 3: Cross multiply
    487,155.52x = 672,274.38 × 285,951.52
  4. Step 4: Simplify right side
    487,155.52x = 192,237,880,818.06
  5. Step 5: Solve for x
    x = 192,237,880,818.06/487,155.52
  6. Step 6: Final answer
    x = 394,612.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.